Patent · US Expired

Easy-open package and method of making same

US5058760A · kind A · utility

0Cited by

5References

14Claims

0Family size

Assignee

Firma Schmalbach-Lubeca AG · DE

Inventors

Georg Bolte · Vechelde, DE
Dieter Heinecke · Wendeburg, DE
Gunter Hexel · Braunschweig, DE

Key dates

Filing date	Jan 11, 1990
Grant date	Oct 22, 1991
Priority date	—
Expiry date	Jan 11, 2010

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65D2577/2091
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An easy-open package has a vessel forming an upwardly open compartment and having an annular rim surrounding the compartment and a foil engaging the rim of the vessel part all around the compartment, having an open tab which projects laterally past the rim, and formed with a tear line extending around the compartment except at the tab and extending around and delimiting of the tab. The tab is unitarily formed with the foil and is connected to the foil by an integral web that overlies and is bonded to the rim. The bond between the foil and the vessel is substantially weaker at the web than elsewhere.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.